Heating apparatus



L. e. COPEMAN.

HEATING APPARATUS.

APPLICATION FILED AUG-11, 1917.

1,336,552, Patented Apr. 13, 1920. 092 7 AV 7 WITNESSES:

INVENTOR @162, %/%W2/ L/aya G Kane/77w? LLOYD G. COPEMAN, OF FLINT, hiICl-IE GFFIOE.

JICTJETGR TS CGEEMAN ELECTRIC STOVE COMPANY, A COB-PGEALIUN Q3? MIGHIGAN.

HEATING AEPARATUS.

Application filed August 11,

To all whom it may concern:

Be it known that I, LLOYD G. COPEMAN, a citizen of the United States, and a resident of Flint, in the county of Genese and State of Michigan, have invented a new and useful Improvement in Heating Apparatus, of which the following is a specification.

My invention relates to heating apparatus, especially ranges and it has special relation to the fastening of ovens therein.

One object of my invention'is to provide an oven having a floating cons ruction, thereby allowing for its expansion and con traction when in use without, in any way, distorting the supporting frame or the oven itself.

Another object of my invention is to provide an oven that is so connected as to permit expansion and contraction without distorting the seating of the oven door, where by an even fit, at all times, is assured.

A further object of my invention is to provide an oven that is securely fastened to the main supporting frame in such manner as to provide aconsiderable space be tween it and said frame, on all sides except the front, to be filled with heat-insulating material, such as mineral wool.

Heretofore the ovens of stoves or ranges have been either a part of, or fastened to, their supporting frames by being either welded, double seamed or bolted to them, with the result that there has been no play whatever between the ovens and their su} porting frames. As the oven doors of ranges are fastened to the supporting frames, it will be readily seen that such strains as may be exerted by reason of wide changes in temperature will tend to distort the supporting frames and even the ovens themselves.

When an oven is a part of, or is rigidly fastened to, its supporting frame, it is difiicult to so fit the. door thatit will be properly seated after the oven has once been subjected to extreme heat. This feature has caused considerable trouble, correction or avoidance of which has been found difficult.

I eliminate the above noted defects by Specification of Letters Patent.

Patented Apr. 13, 1920.

1917. Serial No. 185,747.

my invention which may best he understood by reference to the accompanying drawing, in which Figure 1 is a back View, in elevation, of a range constructed in accordance with my invention, parts being broken away to more clearly show an oven in its normal position; Fig. 2 is a view, partially in elevation and partially in section, on line II-II of Fig.1,- Fig. 3 is an enlarged sectional view showing a portion of the means for securing the oven to its frame; and Fig. iis a sectional fragmentary view on line IV-IV of Fig. 2, showing the oven door in closed position.

Referring to the different figures of the drawing, a main supporting frame 1, of any suitable construction, is provided, in which an oven 2 of materially smaller dimensions is so mounted as to provide top, bottom, side and rear spaces that are filled with heatinsulating material, such as mineral wool 3. A back plate l, to which the oven is fastened, is provided with two openings 5 in which are located electrical terminal blocks 6. The front ends of the side portions of the oven 2 are provided with integral flanges Y that are curved to form hook members to engage grooves in the front castings 8 of the supporting frame 1. The frame 1 is provided with a rear wall 9 which is, in turn, provided with an opening 10 to accommodate the supply conductor.

Referring particularly to Fig. 2, the rear end of the oven 2 is provided with two openings 11 to receive the terminal blocks 6 and is fastened to the supporting frame 1 by a bolt 12 having a head of comparatively large diameter that is clamped between the rear wall of the oven and a strip 18 that is riveted or otherwise fastened in position and preferably extends vertically across the rear end of the oven.

The openings 5 in the back plate 4 being only partially filled by the terminal blocks 6, I provide each terminal block with a sheet metal plate 1 1 to prevent escape of the heatinsulating material. The bolt 12 projects through a hole 15 in a channel bar 16 placed directly across the rear end of the range, andis provided with a nut 17 The channel bar 16 is slightly curved, as shown in the drawings in order to increase its clamping action, as the nut 17 is secured upon the bolt 12 to draw it straight and thereby force the flanged portions 7 tightly against the bottoms of the grooves in the portions 8 of the frame. clamped in position in such manner that expansion and contraction may be permitted without permanent distortion or displacement of any of the parts. u

Another advantageous feature of this construction lies in the fact that it permits a uniform fit or seating of the oven door. As shown in Fig. i i, an oven door 18 is secured to: the cast-iron front of the range by .hinges 19 and is fastened, when closed, by

means of a locking member 20. The inner portion of the oven dooris provided with a slightly beveled surface that snugly fits into the oven 2-. Since the oven is allowed 7 a certain freedom of movement, it will autoin'g' correspondingly shaped portions adaptm-atically adjust itself to the position of the door and insure a close fit between these parts.

The many advantageous features of a range constructed in this manner may readily be seen, and, while I have shown and described my invention as embodied in an electric range, it may readily be embodied in other types of ranges and I desire, therefore, that only such limitations shall be imposed as fall within the scope of the appended claims.

I claim as my invention:

1 In an electric heating device, the combination with a supporting frame, and an .oven contained therein,of means for yieldin'gly attaching said oven to said supporting frame in such manner as to provide top, bottom, side and rear spaces for heatinsul'ating material between said oven and said supporting frame.

2. In an electric heating device, the combination with a supporting frame, of an oven contained therein, of a door connected to said supporting frame and adapted to close said oven, and yieldable means for securing said oven to said supporting frame whereby said oven is permitted to automatically adjust itself to the seating of said door. 7

In a heating device, the combination with amain supporting frai'ne having flange portions, of an oven contained therein haved to engage sai'd portions of said supportmg frame, and means comprising a bolt 6X- tending through the oven and said frame and a bowed member disposed on the frame for drawing said portions into engagement.

a. In a heating device, the combination with a; supporting frame having flange portions, of an oven contained therein having correspondingly shaped portions and adapt- The oven is thus securely ed to engage the flange portions of said supporting frame, and means comprising a bolt extending through the oven and said frame and a bowed yieldable member mounted on the frame for drawing said portions into engagement.

5. In a heating device, thecombination with a supporting frame, a stiffening member attached to one side of said frame, said stiffening member having normally an arcuate form and making contact with said frame only at its ends and an oven of less dimensions contained therein, of means for attaching said oven to said supporting frame and said stiffening member by a single connecting member, said means being adapted to securely clamp said oven in its normal position and in such manner as to provide top, bottom, side and rear spaces between said oven and said supporting frame for heat-insulating material, and electrical contact members located in the side of said frame carrying said stiffening member.

6. In a heating device, the combination with a supportingfra'me, a stiffening member attached to one side of said frame, said stiffening memberhaving normally an arcuate form andmaking contact with said frame only at its ends, and an oven con tained in said frame, of a door connected to said supporting frame and having a beveled surface adapted to fit into and securely close said oven, and a single means for securing said oven to said supporting frame and said stiffening member whereby said oven is permitted to automatically adjust itself to the side of said door.

7. In an electric heating device, thevcombination with a main supporting frame and an oven contained within said supporting frame, of a bowed member disposed on the back of saidfra'me, said bowed member making contact normally with said frame only at its ends, and means for attaching the oven to said bowed member.

8. In an electric heating device, the com bination with a supporting frame, an oven contained within said frame, said oven and the frame being subject to different temperature changes, and means for heat-insulating the oven from the frame, of a stiffening member attached to one side of said frame, said member having normally an arcuate form and making contact with said frame only at its ends, and means for ataching the oven to said stiffening member by a single connecting member in a manner to prevent the changing of the frame structure by reason of the expansion and contraction of the oven.

9. In an electric heating device, the combination with a supporting frame, a supporting member of arcuate form disposed on the exterior of said frame and making contact normally with said frame only at of the expansion and contraction of the its ends, and an oven disposed within said oven.

frame, of means for heat-insulating the oven In testimony whereof, I have hereunto 10 from the frame, and means for attaching subscribed my name this 30th day of July the oven to said frame and to said support- 1917.

ing member in a manner to prevent the changing of the frame structure by reason LLOYD G. COPEMAN. 

